Fairly interesting idea. Your use of expungements are ham fisted and answer baiting, the article would be better with them gone. A general rule with redactions and expunging is to use it if the info is unnecessary, the info can be inferred by the reader without explicit statement, or for in character reasons.

It's amnestics, amnesiacs are people with amnesia.

The tests and interviews don't add much to the article as their results had already been written into the description and the process that lead to them is not very interesting. A large portion of this latter part of the article is devoted to showing that the skip is indestructable, but it doesn't need to be for narrative purposes as the foundation doesn't wantonly destroy anomalies unless they pose a large threat, which this does not.

A general rule for writing skips is to take a concept, then invert it, subvert it, or divert it. You have a decent concept here, but it doesn't develop into a proper narrative. I suggest cutting out everything below the addendum and exploring other avenues of narrative, like the purpose/background of the anomaly or the implications for those living inside it.

Do you have any suggestions on how I could explain the world inside the portrait? Because in my head, the portrait itself was simply a sort of trap, a one-room world where you are stuck inside until the next person takes your place.

Hi author, you already have a board about this draft. Please look at the Draft Forum Guidelines where it states that the rule is one draft, one board. This helps reduce spam, and keeps things fair for all users. You should post about any major updates (such as a second draft) on your original board, not make a new one.